CAUTION: The operator of the FuelStik "Master" is solely responsible to assure that the correct scale is properly installed in the Float Tube and that through on-ground experience the operator has observed that the quantities shown are accurate. The FuelStik is a secondary means of estimating fuel quantity and in no way is meant to replace the fuel measuring equipment mandated by FAR's or otherwise.
WARNING: This product is made to be used with 100LL fuel only. The use of any additives such as "Marvel Mystery Oil" will void the warranty.